Fuse for electric cut-outs.



L. E. STEWARD.

FUSE FOB. ELECTRIC GUT-OUTS.

APPLIOATION FILED DEO.10, 1912.

1,080,496. Patented Dec. 2, 1913.

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LEWIS E. STEWARD, OF MUNCIE, INDIANA.

FUSE FOB ELECTRIC CUT-OUTS.

Specification of Letters. Patent.

Patented Dec. 2, 1913.

Application filed December 10, 1912. Serial No. 735,989.

To all whom. it may concern:

Be it known that I, LEwIs E. S/rEwAnD, a citizen of the United States,residing at Muncie, in the county of Delaware and State of Indiana, haveinvented new and useful Improvements in Fuses for Electric Cut-Outs, ofwhich the following is a specification.

This invention relates to fuses for electric cut-outs, and particularlyto a novel construction and mode of mounting the fuse, the object of theinvention being to provide a construction whereby, when the fuse burnsout, a new fuse may be conveniently applied in its place.

A further object of the invention is to provide a fuse mounting whichwill permit of the escape of smoke and gases from the fuse casing whenthe fuse burns out, and which provides for the firm support of the fuseover the end caps of the fuse casing, to obviate liability ofdisplacement of the arts.

p The invention consists of the features of construction, combinationand arrangement of parts hereinafter fully described and claimed,reference being had to the accompanying drawings, in which Figure 1 is alongitudinal section through the fuse mounting. Fig. 2 is a longitudinalsection taken at right angles to that shown in Fig. 1. Fig. 3 is an endelevation. Fig. 4c is a longitudinal section through the fuse strip andfuse terminals removed.

Referring to the drawing, 1 designates a tubular fuse casing, made ofsome suitable insulating material and closed at its ends by caps 2 and3, secured in position by screws 4. The caps are adapted to be readilydetached upon removal of the screws 4, and are respectively threaded toreceive the terminal screws 5 and 6.

A fuse strip 7, of any suitable material, is arranged within the casing1 and supported by terminals or bracket pieces 8. Each of these bracketpieces is approximately L- shaped, having a long arm 9, a short arm 10arranged substantially at right angles thereto, and an offset portion 11connecting said arms. The ends of the fuse strip 7 are detachablyconnected with the longer inner arms 9 of said fuse terminal brackets byscrews 12, while the short outer arms 10 of said fuse brackets areprovided with threaded openings 13 to receive the shanks of the terminalor binding screws 5 and 6, whereby said terminals and fuse strip aresupported in position within the casing.

It will be understood from the foregoing that in the event of theburning out of the fuse, the old fuse may be removed by first detachingone of the binding screws and its carrier cap and then detaching theother binding screw and its carrier cap, whereupon the destroyed fuseand fuse terminals may be removed from the casing and disconnected bydetaching the screws 12, after which a new fuse strip may be connectedwith the terminals and the latter mounted therewith in the casing in anobvious manner.

It will be observed that the offset portion 7 of the fuse pieces adaptsthe fuse strip to be supported so that it lies in the plane of thescrews 5 and 6 and centrally within the casing, the advantages of whichwill be apparent. The casing is provided with one or more vent openingsM for the discharge of the smoke and gases upon the burning out of afuse, thus preventing deposit upon the contained parts and avoidingliability of the inhalation of noxious gases by the party replacing theold fuse with a new one.

I claim A fuse for electric cut-outs comprising a tubular open endedcasing of insulated material having vent openings formed therein, endcaps detachably secured to and closing the open ends of the casing,binding screws carried by said caps, substantially L- shaped fuseterminals disposed within the casing, each having its long arm extendinglongitudinally of the casing, and its short arm extending parallel withthe adjacent cap and engaged and fastened thereto by the coactingbinding screw, said long and short arms of each terminal being connectedby an ofi'set arranged to dispose substantially in alinement with saidbinding the long arm thereof in the plane of the screws. 10 bindingscrews, inbent lugs upon the caps In testimony whereof I mysignaengaging the opposite sides of the short ture in presence of twoWitnesses.

arms of the terminals and holding said ter- LEWIS E. STEXVARD. minalsfrom rotation, and a fuse strip delVitnesses:

tachably connected with the long arms of WM. W. ORR,

the fuse terminals and supported thereby HORACE Gr. MURPHY.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, D. G.

